RES 11-58 - Laserfiche WebLink

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in deeper horizons of the outwash deposit. As previously noted the P304C well is screened 40-50 below the groundwater surface and located more than 500 feet from an unlined area of the landfill. Landfill gas effects aze more common for water table wells in proximity to unlined landfill azeas. The results for gas probe, GP-17 which is located directly adjacent to P304C, show no detectable levels of methane for monitoring conducted in recent years. Tetrahydrofuran and ethyl ether, which are signature parameters for leachate impacts for PC17C, show increasing trends. The evidence for P304C indicates that leachate impacts are also occurring. P314C is located in a sidegradient orientation to P304C and the source area for groundwater at P314C may involve more extensive contamination. The screen position for neazby well P303C is roughly 20 feet in elevation above the screen elevation for P314C and may be missing potential contamination in the deeper portion of the outwash at this location. ERL must conduct additional contaminant investigation and monitoring in the vicinity of P304C, P320 and an azea southeast of P314C. This approach is supported with emphasis on evaluating the deeper outwash. 14.) .Dust Noise. and Odor. Fugitive dust emissions off-site shall be controlled at the Landfill Site as necessary by undertaking the following: road surfaces within the Landfill Site shall be wetted with water or an appropriate chemical whenever off-site dust levels become unreasonable as determined by the City Environmental Administrator. Dust pollutives shall be utilized to the extent (,, necessary on cover material such as stockpiles to reduce wind erosion as well as on other exposed surfaces as appropriate. Cover compaction and revegetation activities shall be undertaken promptly on the completion of various fill areas and vegetative cover capable of quick growth shall be utilized. Plantings of bushes and trees shall be installed if needed to buffer the Landfill Site and minimize wind erosion. All equipment and vehicles utilized at the Landfill Site shall be periodically inspected and maintained to minimize noise. Vegetative barriers along the boundaries of the Landfill Site shall be utilized to minimize off-site noise impacts. Applicable state standards for noise pollution may not be exceeded by the Landfill operation, equipment, vehicles, or machinery. Licensee agrees that it will use best management practices to control against odors. The Environmental Administrator may make recommendations regarding possible odor controls. If a verified odor problem is ongoing, both parties agree to institute good faith negotiations to minimize the odor problem. If in the event that the City receives ten or more complaints within asix-hour period relating to a single odor description and this odor complaint has been verified by both City and Licensee and identified as coming from the Facility, the Licensee shall cease such activity(s) that are the direct cause of the odor(s). Normal activity(s) shall not 18